Android: Fix controller float sliders crashing

By not setting a stepSize, stepSize was getting set to the default
value of 0, which is an Int. This later caused a crash when trying to
cast it to Float.

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/view/FloatSliderSetting.kt

@@ -36,8 +36,9 @@ open class FloatSliderSetting : SliderSetting {
         min: Float,
         max: Float,
         units: String?,
+        stepSize: Float,
         showDecimal: Boolean
-    ) : super(name, description, min, max, units, showDecimal) {
+    ) : super(name, description, min, max, units, stepSize, showDecimal) {
         floatSetting = setting
     }
 

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/view/SliderSetting.kt

@@ -41,11 +41,13 @@ sealed class SliderSetting : SettingsItem {
         min: Any,
         max: Any,
         units: String?,
+        stepSize: Any,
         showDecimal: Boolean
     ) : super(name, description) {
         this.min = min
         this.max = max
         this.units = units
+        this.stepSize = stepSize
         this.showDecimal = showDecimal
     }
 

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -2356,6 +2356,7 @@ class SettingsFragmentPresenter(
                     ceil(setting.getDoubleMin()).toFloat(),
                     floor(setting.getDoubleMax()).toFloat(),
                     setting.getUiSuffix(),
+                    1.0f,
                     false
                 )
             )